Chbonic



H. W. CHRONIC.

WINDOW LOCK.

APPucATioN FILED JAN.23,19|9.

Patented Oct. 14, 1919.

H. W om...

HUGH w. .Casoria F .serve-011W, Illano.

vWINDotr- Inor.

lSpecification of Letters Patent.

YPatenteol Oct. 14, 1912 Application filed January 23, 1919. I 'Serial No. Q7/2,731.V

To all .whom it 'may concern: Y Y

.Be-it known that I, I-IUGH W. GHRoNio, a citizen of lthe United States, residing at Sandpoint, in the county ot' Bonner and State of Idaho, have invented certain new and useful Improvements in Window- Locks; and I do hereby declare the following to be a full, clear, and eXact description of the invention, such as will .enable others skilled in the art to which it appertains to make and use the same.

' This inventionrelates to window locks,

and more particularly to means tor securing a window sash in adjusted position.

One of the main objects ot the invention is to provide simple and efficient means which may lbe readily applied to a window sash of standard construction adapted to lock the and cafrriedby the window sash, vthese levers sash in adjustment and to permit it to be readily adjusted in either direction.

A further object is to provide a securing rod -andlocking levers associated therewith being so related as to normally prevent movement of tliesash in either direction and being adapted to be .readily moved into inoperative position so as to permit the sash to be adjusted.

Further objects will appear from the detailed description.

In the drawings: Y

Figure 1 is a front view of a window securing means constructed in accordance with my invention as applied.

Fig. 2 is a front view of the lock proper with the top plate removed.

Fig. 3 is a side view of the same.

Fig. 4 is a section taken substantially on line 4 4 of Fig. 3.

Fig. 5 is a view similar to Fig. 4 showing one of the locking levers in inoperative position.

, In applying my invention, I provide a lock designated generally by 1 which is secured to the side rail 2 of a window sash 3 slidable in frame 4 of standard construction, this lock coperating with a locking rod 5 secured to the adjacent side member of the window casing. This rod 5 is disposed vertically and projects into a vertically extending groove 6 formed inthe rail 2 for this purpose, the end portions of the rod being oset and flattened to provide securing ears 7 which receive screws 8 inserted therethrough and carries .a substantially rectangular housing a centrally positioned post 13 of substantial rectangular V.cross Asection which is .disposed with :its faces substantially at forty-five deT grecs tothe edges .of base plate 9 so as to provide, in'etfect, knife-edge 'bearings at each side directed toward the adjacent inner ends of the stopv members 12. As will be 'noted more .clearly romFig. 2 the innermost yedges of the members 12 are positioned slightly in advance .ofthe lateral edges of post 13 so as toprovide forwardly converging passages or slots which receive loclring'levers 14 inserted therebetween. These levers are provided, adjacent their outer ends, with cylindrical openings 15 which receive-the vbody portion of rod 5, this rodbeing inserted through openings provided throughthe side walls/of housing 1,0, adjacent the'outer ends thereof,

for this purpose. The edges of post 13 and the stop members v12 provide tulcrums Afor rocking movement ,of the levers in either .direction transversely 0i the housing, these v1evers :being normally held .with their ,outer ends rocked inwardly into contact .at :thecenf ter of the outer edge of base plate 9 by eX- .pansion coi-l .springs 16 -mounted about rod .5 and Aconfined between the outer end portions ing rod 5 is secured to the window casing inV the manner stated and projects into groove G, the lock being mortised into the side rail 2 with the inner end portions of the levers 14 projecting beyond the inner edge of this rail so as to be readily accessible.

When the locking levers are in normalV position with their outer ends in engage-v ment, as in Fig. 4, the material of the levers at the diagonally opposite inner and outer edges of the openings 15 engage rod 5, as shown. It it is attempted to move the window sash, and consequently the lock, in either direction, the levers at the inner edges i of these openings are forced into biting engagement with rod 5 so as to positively prevent movement of the window, the outer edges of the openings being also forced into biting engagement with the rod. If it is desired to lower the sash, the inner end of the lower lever 14; is raised so as to bring this lever into engagement with the stop screw 17, thus bringing the openings 15 into concentric relation with rod 5. With the lower lever in this position, the window may be readily lowered, as the spring 16 of the other lever will permit sufficient upward give of the outer end thereof to Vprevent binding on rod 15. 'I/Vhen it is desired to raise the window, the upper lever is similarly operated. By grasping both levers simultaneously and forcing them toward each other, at their inner ends, so as to bring the openings 15 into concentric relation with rod 5, the window sash may be freely moved in either direction, being positively locked in adjustment upon release of the levers.

It will be evident that there may be slight changes made in the construction and arrangement of the details of my invention without departing from the field and scope of the same, and I intend to include all such variations, as fall within the scope of the appended claim, in this application in which a preferred form only of my invention is disclosed.

What I claim is:

In window securing means, a look including a housing adapted to be secured to the side rail of a window sash, said housing being provided adjacent each side with an inwardly extending stop member, a bearing post carried by the housing between the inner ends of said stop members and equidistant therefrom, the stop members and bearing post forming spaced passageways for reception of `locking levers, locking levers inserted through said passageways at each side of the post and being provided with openings adjacent their outer ends, said post being provided with laterally directed bearing edges and the stop members being provided with bearing edges positioned outwardly beyond the bearing edges of the post, each of said levers being provided with an opening therethrough adjacent its outer end, a locking rod inserted through the side walls of the lock housing and through said openings of the levers, said rod being of less diameter than the openings in the levers and being adapted to be secured to a window casing, and expansion coil springs mounted about said rod and confined between the side walls of the housing and the outer ends of the levers, said springs vacting to normally hold the outer ends of said levers toward each other so as to maintain the levers at the edges of said openings thereof in biting engagement with said rod, the bearing post and the stop members being so related as to permit the levers to be rocked into such position as `to bring the openings therethrough into substantial concentric relation with the rod so as to permit movement of the window sash in either direction desired.

In testimony whereof I aiX my signature in presence of two witnesses.

HUGH W. CHRONIC.

Witnesses:

MINNIE DAVIS, A. K. BowDEN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

